How to break in new jute rope

Our jute arrives treated and ready to tie with, and it keeps softening for the first weeks you use it. New jute is stiff because of the twist and the batching finish, not because anything is wrong with it. Breaking in is the process of flexing those fibres until the rope drapes instead of springing back.

Raw jute straight off a spool is a different job, covered further down.

Why new jute is stiff

Jute yarn is spun, then laid into rope under tension. That twist is what gives the rope its strength and its friction. It also makes a new rope want to return to a straight line.

The batching oil adds to it. All jute is treated with oil before spinning, known as JBO. The oil keeps the raw fibre from shredding in the machinery. A new rope still carries some of that finish, and the fibres slide against each other less freely than they will later. The JBO entry covers the chemistry.

Stiffness is not a defect. Finishing takes some of it out before a rope ships, and the rest comes from regular use.

What ours arrives like

Our Ogawa jute is cleaned and hand-finished in Leuven before it ships. That is the part that takes equipment and hours, and it is why our rope is far less rough in the hand than raw jute off a spool. It arrives ready to tie with. You do not need to do anything to it before your first class, but it will soften further with time.

Breaking in a finished rope

Tie with it. That is most of the answer.

Ordinary practice does most of the work: knots pulled tight and worked loose, natural oils found on human skin, friction from sliding your rope against itself. Over the first weeks of regular tying the rope softens on its own.

If you want to speed this up, you can run the whole length through your hands a few times before a session, gripping firmly enough to feel the lay of the strands. If you’d like, you can apply small amounts of oil, such as jojoba or camellia; see rope care for more information.

Work it in short sessions rather than one long one, and keep it slow. Speed against a hard surface generates heat, and heat damages the fibres.

Expect a mess. New jute sheds loose fibre as it breaks in, and the first few sessions will leave it on the floor, on you, and on whatever you were tying over. Consider a lint roller to help clean up! That is the rope giving up the ends that were always going to come off, not the rope falling apart. Shake the rope out somewhere you do not mind sweeping.

What broken-in feels like

• The rope drapes over your forearm instead of holding its own shape.
• A bight stays where you put it rather than springing open.
• Knots seat with one pull instead of needing to be argued into place.
• The rope falls open when you drop it, without shaking.
• The surface carries a light fuzz. On a rope this new that is normal. Hairiness that turns up months later is a different thing, and rope care covers how to tell them apart.

When to stop

Stop when the rope does the things above. Working it further does not improve it. It ages it.

Every pass of tension and every knot pulled tight spends some of the rope’s working life. That is the trade-off for a rope that handles well sooner.

Two things you might see are not about breaking in at all, and neither reverses:

• Fibre that parts when you put tension on it. Loose fluff is fine. Fibre that separates takes a rope out of suspension use.
• Glazed or shiny patches, from working too fast against a hard surface. That takes a rope off the body entirely.

Both are retirement signals rather than stop-rubbing signals, and rope care covers what to do about them.

Processing raw jute off a spool

People buy a spool of raw jute and ask how to turn it into rope they can tie with. It is days of work, it needs equipment, and the method depends on the jute you bought.

The shape of the process, at a high level:

1. Cut and secure. Cut to length and tie off the ends so the lay cannot unwind during the rest.
2. Wash or condition. This takes off surface batching oil and much of the smell. Wear nitrile gloves and work with ventilation: this is prolonged skin contact with wet batching oil, which is the one exposure in rope worth taking seriously. Heat weakens the fibre every pass, so the less of it the rope sees, the longer it lasts.
3. Stretch. Hung and lightly loaded while it dries, so the rope sets straight rather than curling. Hang it from something high, and keep the load modest.
4. Dry thoroughly, all the way to the core.
5. Singe, before any oil goes near it. Passing the rope quickly through a flame takes the surface fuzz off. Loose fibre ignites. Work outdoors or over a hard floor with nothing flammable in reach, keep water to hand, and never put a flame near rope that already carries oil or wax.
6. Oil, and sometimes wax. After the flame work, never before. This puts back the suppleness that washing took out.
7. Tidy and inspect. Then repeat the parts that did not take.

Batches differ, and a method that suits one spool can be wrong for the next. Three worth reading first: RopeLabs on rope and safety kit for the general picture on what jute wants and what to keep away from it, AMATSUNAWA on jute conditioning, and The Rope Box on how their jute is processed. The Rope Box machine wash and use fabric softener, which we would not; rope care explains why.

We do not sell raw jute, so buy it from someone who does. AMATSUNAWA sell it by the roll. Place des Cordes in Paris sell raw or untreated pieces at 8 m and 50 m, which is the cheaper way to find out whether you enjoy it before committing to a roll.

Learn the flame work standing next to someone rather than from a page. All of this is at your own risk and judgement.

POSH breaks in differently

POSH ships ready to use, but it still softens as you tie with it. It does not break in in the same way as jute because there is no batching finish or natural fibre to condition.

Regular use is enough. Work it loose by tying with it or running it around a smooth surface, without oil or wax. When the rope no longer holds itself stiff and bends under its own weight, it is broken in.

The ongoing difference is the real one: jute wants oiling every couple of months and a hang after each session, POSH wants a wash now and then. The two cost the same here, so pick the upkeep you would rather do. The comparison is in POSH vs jute.

What we actually do

If a rope arrives stiffer than you expected, write to us before you start working on it. Batches take the finish differently, and we would rather know.

The care cadence after break-in is in rope care. If you are still deciding what to buy, the starter kit guide is the place to start.